Alternating-current relay



0`. S. FIELD.

ALTEHNATING CURRENT RELAY. APPLICATION FILED SEPT30| |916.

1,333,070. N q, Patented Mar. 9,1920.

4 SHEETS-SHEET r.

INVENTOR 0. S. FIELD. ALTERNATING CURRENT RELAY. APPLICATION man SEPT.so. me.

1,333,070. Patented Mar. 9,1920

4 SHEETS-SHEET 2.

INVENTOR BY 5h53@ ATTORNEYS 0. S. FIELD.

ALTERNATING CURRENT RELAY.

APPLacAloN min senso. |915.

1,333,070. Patented Mar. 9, 1920.

4 SHEETS-SHEET a. f 1 EZ A TTRNE Y o. s. HELD. i ALTEHNATING CURRENTRElAY.

APPLICATION FILED SEPT.3D, i916.

4 SHEETS-SHEET 4.

INVENTOI? ATTORNEY Patented Mar. 9, 1920;

UNTTED STATES PATENT OFFICE.

OSCAR S. FIELD, 0F ELIZABETH, NEW JERSEY, ASSIGNOR T0 HAIL CO., ACORPORATION 0F MAINE.

Specification of Letters Patent.

SWITCH a SIGNAL Application ma september so, 191s. serial No. 123,012.

To all 'whom it ma concern Be itknoyvn t at I, OSCAR S. Freno, a subjectof the King of Great Britain, and a resident of the city of Elizabeth,county of Union, and State of New Jersey, have invented certain new anduseful Improvements in Alternating-Current Relays, of which thefollowing is a specification.

This invention relates to certain new and useful improvements inalternating current relays' of the split based type and comprises morespecifica ly improved means of construction and arrangement of parts.

One object of my invention is to provide a relay with the contactsarranged in thc forepart of theA relay in order to allow the same to bereadily inspected; the mechanism being locatedto the rear of the relayand out ofthe wa of the contacts.

Another object of my invention is to pro- .vide a `novel means ofconstruction of the splitphase ma et.

'A -further oljlect of my invention is to vprovide means comprisingsuitable reduc- .tion gearing and links for increasing the pressure atthe contact fingers.

f' Other and further objects of my invention williappear in the attacheddescription, and will more specfically'claimed in the attached claims. V

In Fi re 1, I show a section through a relay em odyin my invention. v-I.n`Fig. 2, I s ow a front elevation of said relay,

In 3, I show a sectional plan view of the s lit phase magnet.

In ig. 4, I show a section through A-A of Fi 3.

In Fig. 5, I show an end elevation of one ofthe4 les of the split phasemagnet.

i 6, I show a pers tiveview of the sharIing coil used on t e splitphased ma et.

fFig. 7, I show a section through the rotary disk and slip pinion usedin the relay.

In Fig. 8, I show an end elevation of one of the bearings.

In Fig. 9, I show a detail view of one of the front contact posts.

In- Fig. 10, I show the detail construction of one of the contacts.

In Fig. 11, I show the details of the front binding post screw.

, a :1..'r^", E' I mii' l;V In Fig. 12,1 show details of a lock washer.In Fig. 13, I show, adetail -of the-lock washer em loyed toboldthe-lockwasher shownin i 12, in. lace, and 4also toglockthcjcontact, s own in-Ilig. T10 from rotation.

In Fig. 14,1show amodifiedlock washer used in place of Figs.i12 and 13.'4

In Figs, 16 andl', Lshow sectional1 and front views of a'niodied form ofrelay, to be used where the :quick-,action of the relay isnecessary. v jf "g .i

Referring to Figs. 1 and 2,V the relay conslsts of a metaljbase 1,providedwith: an arched recess V 2,rand'an opening 3, inwhich 1sinserted an insulating4 panel 4. The-base 1, is also vlprovidedwith;.downwardly` projecting hearing.carrying".members.5l and 6., andwith .u d0.WnwwldlrA proiectin Part 7 which is employed forcarryinga spit, phase magpet 8. A shaft 9pis,.j0\11'1181d inlthie bearings ,10 vand11, 'shaft i9 carrying; fa non; ma etic disk 12 rigidly. mountedther-canin snc a manner Vthatthedislr wiil be y,free toire.- tatebetween. the ',poles .13- and 14 of` the split phase' magnet 8fas shown.A pinion 15, looselyfmountedso as ,to be tree to rotate about the sleeve.extension 169i rdial; 12-7'- the extension 16 being rovided-with.awearing sleevel? totaket e we ar ofthe ,pinion 15. On each side of thevpinion 15 rare provided friction washers 18 and .19, andthe pinion 15;is held. pressedbetwn these-frietion washers by means rofspring.20iacting between stop ring4 21 and Awasher 22. The disk 12 is providedwith a .thickened hub 23 and a rim 24,' in1such'a mannenas to :justclear the poles 13 and 14 .of the .-s lit phase magnet 8, and -yetmaintain the di i12 rigid and free from buckling. y g .1:1 4 z l Thebearings '10 4end ll .arefthreadedpat 25 and provided with lock-,washers26., l,These lock washershve-spsnsiextnsiena? and 28 which' keep themforced, out under the shoulders29 of the bearings. ,An extension 30 isprovided and is turned under into a slot 31I in the bearingcarryngzmember, in such -a manner as to prevent rotation ,of the lockwashers. The bearin s are freeto be screwed in and out of the caringcarryin members 5 and. 6 in orderto give Intera adjustment of the disk12 between the poles 13 and 14 of the-split phase magnet. y

After-the bearings have been adjusted Patented Mai-L e,V ieee.

` ing 621- from turning.

projections 32 are turned up about the hexagonal face 0f the bearing',thereby locking the same from rotation. A shaii 33 is mounted inbearings 3-1 and 35 and carries a sector 36 which enga-ges with theteeth of the pinion 15. On sector 36 a projection 3T is Jrovided andnormally rests on the pinion 5 therebg supporting the weight of thesector 36. n the outer end of the shaft 33 a crank 38 is provided whichis so arranged, that upon the movement ot' the sector 36 `in an u warddirection, it will draw the linl( 3-9 own', thereby drawing lever .arm l4f) down androtating contact carrying har il about theV pivot42.

The split phase magnet S yis built of a sexiesy 'of lnminations 413 and44 stacked toge'tber i-n-such a manne-ras to alternate the joints usshown at 415 'and 46. At the end ot the poles a groove 47 is provided.After the coils 48 and 49 have been pushed' over the poles a shading'coilv 50, shaped as shown in Fig. (i, isslid into the groove 47 in s ucha manner that it surrounds the lower hall' of thepol'e and is riveted inplace by means of rivets 51,'. thereby holding the coils 4S and 49 inplace. This split fpliase magnet is clamped to downward projecting part7 by means of clamp plate 52 and screws 53.

The insulating panel 4 is provided with a Series4 of front contacts 54and berk contoets 55, so arranged that the contact fingers 56.11.1111 5Twill engage therewith" upon a vertieal ino'veinento'the contact {ingercarrying bar 41. A clamping' rod 58 providedwith a knurled nut 59 isarranged in such u. manner that it wil'lclamp n glass cover 60 over thewhole mechanism, draw ing'YA the cover up against a gasket 61. The frontconta 54 is composed ot' a cont-act binding post 69.l which is providedwith a square head @3 and is tapped at 64. The insulating panel '4 isprovided with a he fgdnel' 653m' the upper side thereof the lower side.In 'lacing the binding 62 yin position' t e Betgohil not 67 i's lirstinserted in' the recess e5. The binding post 62 is through the opening(i8 and through the nut 67 until the square head 63 istight against theface 69 of recess 66.'.,fjf1llil'stlige washer 70 isY then inserted ,iiirecess 6 thereby preventing the bind,-

The lock washer the square head 63 in d'x'nanner that the ears 7 2project up- 'witi'd-ly 'and hold the washer 7() in place.

The contact carrying member 73 which cariesgraphiteeontact 74isproinided with a' screw extensiorr. Thsextension 7 5 is now $rewedinto; the tapped portion 64 of placed over the binding post 62 4therebyholding the lock washers 'f1 and 7 rigidly in` place. The ears 73 f lockwashers .71" at'enow turned down about the hexagone? fue@ r4 of contactcarrying piece 7 3, thereby locking the same from rotation.

In Fig. 14, l show a modified form of washer which, obviously, may beud, to replace the lock washers and 71.

The operation of the relay as described is as follows:

.lis shown in Figs. 1 and 2 the relay is in the dener ized position, theback .contacts 55 and 5 being held closed by gravity. 'lo operate therelay alternating current is applied to the coils 48 and 49 from anysuitable source. On account of the 'nixlgnet 8 being providedwithshadfmg coils 5() on the lowerhalves of the laminated polestructures 13 and 14, it' will be'seen'that a downwardly movi-ng- Huxwill be' created between the ,poles 13 and 14 which will canse the disk1Q to rotate in a clockwise direction. This will rotate pinion'lv andmove sector 36 apwanily until the projectionl 37 engages with the lip 88of the relay top' 1, the pinion 15 beingr so arranged that it Witl slipwhen sector 36 is brought to a-stop in order io absorb the momentum ofdisk 122.1 This will cause crankl 38 to 4Inlove downwardly, drawing arni40 down by means 0f link 39 and rotating the contact nger bar 41 aboutthi` pivot 42 in such a manner as to raise the contact Fmg-ers 56 and57, and-thereby lli-euh the back contacts 57 and 55 and make the frontcontacts 54 and 56` It will be seen that upon the denergization of therelay that both the weight' of the Contact finger bar 41 wirthitscontact ingers 56 and 57. and also the weight of the. sector 36, tend toopen the relaiyto 'its deenernized position.

I have shown in- Figs. l5 and 16, amodified construction of the relay inwhich I have replaced pinion 15 by mea-ns of crank 89, and sector 36 bymeans of link l'90. and extension lever 91 of crank 38. A i

1t will be seen. v.that by means of this modified construction a. farmore rapid-aetion of the relay may be obtained at the'sacriiice ofeither more energy or a reduction in the pressure obtainedat the contactfinger.

While have described my invention it is obvious that variousmodification may be made in the construction off my apparatus withoutdonating .from the broad' of the inyention; 'L therefore, cio-Ilot Vwishto be' restricted te *the 'specie @om di struction as shown anddescribed.

Having described my invention what I claim as new and desire to secureby Letters Patent is: A

1. In combination with a relay a source of alternating current supply, asplit phase magnet energized fronfl said source Vcomprising a bgbolarmagnet-.having compose of bent sheet metal abo'ut-'a p0rnon of its paiesto @vente a moving Heldbetween said poles, contacts und courting' con-.ably insulated therefrom,

tact fin rs, and a nonma netic disk rotor mounte transversely at theback of said contact fingers to operate the same.

2. In a relay the combination of a metal top having an insulating panelcarried thereby; contacts carried by said insulating panel, a contactfinger carrying bar ivotally mounted on said top, contact gels carriedthereon and adapted to coact with said contacts, and means comprising asplit phase mavnet, and a nonma netic operating element lacedtransversely ehind said contacts an contact finger bar to operate t-hecontact finger bar.

3. In a relay the combination of a metal top having an insulating panelcarried thereby; contacts carried by said insulating panel, a contactfinger bar pivotally mount ed on said top, contact fingers carriedthereon and adapted to coact with said contacts; a split phase magnet, anon-magnetic disk rotor placed transversely behind said contacts andcontact finger bar and adapted to operate the contact nger bar upon theenergization of said split hase magnet.

4. In a relay the com ination of a metal top, contacts carried by saidtop and insulated therefrom, a contact linger bar ivotally mounted onsaid top, contact ngers carried thereon and adapted to coact with saidcontacts, and means comprising a split phase magnetl and non-magneticdisk rotor aving a rim and hub formed thereon to prevent buckling of thesame, to operate the contact finger bar.

5. In a relay the combination of a metal top, contacts carried by saidtop and suita Contact finger carrying bar pivotally mounted on said top,contact fingers carried thereon and adapted to coact the said contacts,a split phase magnet and a non-magnetic disk rotor having a rim and hubformed thereon to prevent buckling of the same; said disk being placedtransversely at the back of said contacts and operably connected to saidcontact fingers to operate the same.

6. In a relay the combination of a metal relay top; contacts andcoacting contact fingers insulatively mounted thereon; means foroperating said contact fingers comprisin a split phase ma et, com osedof a laiinated structure, lving shsding coils formed of bent sheet metalabout a portion of its poles, and a non-magnetic element transverselydisposed behind said contacts and contact fingers and operativelyconnected to said contact fnffers to o rate the same upon energizationo? said sp 't phase magnet.

7. In a relay, the combination of a metal relay top, contacts andcoacting contact iingers insulatively mounted thereon, means foroperatingsaid contact fingers comprising a split phase magnet composedof a laminated structure having shading coils formed of bent sheet metalabout a ortion of its poles, and a nonmagnetic dis rotor having a rimand hub formed thereon to prevent buckling of the same, said disk rotorbeing transversely disposed behind said contacts and contact fingers andoperatively connected to said contact fingers to o erate the same uponthe energization of sai split phase magnet.

8. In a relay an operating element comprising a split -phase magnet,coils completely surrounding the poles thereof, shading coils formedfrom flat sheet metal stock i artly surrounding the poles thereof andaving faces adjacent the outer walls of said coils to retain said coilsin place, and a nonmagnetic element acted upon by said split phasemagnet whereby the nonmagnetic element is caused to move( 9. In a relaythe combination. of a metal top having an insulating panel carriedthereby, contacts carried by said insulating panel, a. contact fingerbar pivotally mounted on said top, contact fingers carried thereon andadapted to coact with said contacts, a split phase magnet, a nonmagneticdisk rotor placed transversely behind said contacts and contact fingerbar and adapted to operate the contact finger bar upon the energizationof said split phase magnet, clamping means and a cover of transparentmaterial adapted to incase the movable elements and form a support forsaid relay.

In testimony whereof I have signed my name to this specification.

OSCAR S. FIELD.

